Doris Day as Grace LeBoy Kahn

Danny Thomas as Gus Kahn

Frank Lovejoy as Walter Donaldson

Patrice Wymore as Gloria Knight

James Gleason as Fred Townsend

Mary Wickes as Anna

Julie Oshins as Johnny Martin

Jim Backus as Sam Harris

Minna Gombell as Mrs. LeBoy

Harry Antrim as Mr. LeBoy

William Forrest as Florenz Ziegfeld

Bunny Lewbel as Irene, at age 6

Robert Lyden as Donald, at age 8

Mimi Gibson as Irene, at age 3

Christopher Olsen as Donald, at age 4

John Alban as Benefit Guest (uncredited)

Betty Arlen as Chorine (uncredited)

Vince Barnett as Burlesk Comedian (uncredited)

Dan Barton as Hollywood Producer (uncredited)

Mary Bayless as Benefit Guest (uncredited)

Rodney Bell as Harris' Assistant (uncredited)

George Boyce as Stage Manager (uncredited)

Paul Bradley as Benefit Guest (uncredited)

Chet Brandenburg as Stagehand (uncredited)

Else Bäck as Mrs. Kahn (uncredited)

Frances Canto as Nurse (uncredited)

Geraldine Cobb as Secretary (uncredited)

Tris Coffin as Nightclub Maitre D' (uncredited)

Hans Conried as William Rossiter (uncredited)

Paul Cristo as Soldier (uncredited)

Wade Crosby as The Bartender (uncredited)

Dan Dowling as Nightclub Patron (uncredited)

Tom Ferrandini as Benefit Guest (uncredited)

Charles Fogel as Benefit Guest (uncredited)

Rudy Germane as Soldier (uncredited)

Kenneth Gibson as Benefit Guest (uncredited)

James Gonzalez as Party Guest (uncredited)

Herschel Graham as Party Guest (uncredited)

Marion Gray as Racetrack Patron (uncredited)

Robert Haines as Waiter (uncredited)

Ray Heindorf as Orchestra Leader at Kahn Benefit (uncredited)

Marcoreta Hellman as Secretary (uncredited)

Kathleen Hughes as Nurse (uncredited)

Pete Kellett as Soldier (uncredited)

Ray Kellogg as John McCormack (uncredited)

Clarence M. Landry as Dancer (uncredited)

Trudy Marshall as Frankie Mason (uncredited)

Sydney Mason as Doctor (uncredited)

Frank McLure as Benefit Guest (uncredited)

Harold Miller as Benefit Guest (uncredited)

Ewing Mitchell as Doctor (uncredited)

Hans Moebus as Benefit Guest (uncredited)

Jack Mower as Benefit Guest (uncredited)

Violet Murray as Chorine (uncredited)

George N. Neise as Isham Jones (uncredited)

William J. O'Brien as Waiter (uncredited)

Monty O'Grady as Bar Patron (uncredited)

Peter Ortiz as Soldier (uncredited)

Paul Panzer as Man in Sing-a-Long Audience (uncredited)

Dorothy Patrick as Chorine (uncredited)

Norman Phillips Jr. as Young Song Writer / Pianist (uncredited)

Lonnie Pierce as Chorine (uncredited)

Joe Ploski as Man in Sing-a-Long Audience (uncredited)

Suzanne Ridgway as Chorine in Wings (uncredited)

Rod Rogers as Assistant Manager (uncredited)

Clark Ross as Benefit Guest (uncredited)

Dick Simmons as Egbert 'Bert' Van Alstyne (uncredited)

Ted Stanhope as Waiter (uncredited)

Arthur Tovey as Man in Sing-a-Long Audience (uncredited)

Glen Turnbull as Stage Manager (uncredited)

Joan Vohs as Chorine (uncredited)

Martin Wilkins as Stage Manager (uncredited)

Bonnie Lou Williams as Gloria Knight (singing voice) (uncredited)

Jack Williams as Dancer (uncredited)

Tom Wilson as Man in Sing-along Audience (uncredited)